four u.s. army sergeants were killed and 17 people were hurt and six of them are still in the hospital. witnesses describe the scene as horrific. >> i just saw people under the train like dead. there was blood all over. >> it is pretty sad. >> it is very sad. i have said prayers for several people. >> federal authorities say they will investigate the crash. >>> in just a few minutes president obama will meet with four of the most important leaders of congress at the white house. they will talk about his plan to avoid going over that so-called fiscal cliff. mr. obama has been working for three days to build support for his plan and our foreign affairs correspondent jill dougherty is at the white house. good morning, jill. >> carol. >> well, you're right, this is about to begin and we saw the motorcade of vice president biden come by. he is here and of course the four leaders of congress, two democrats, two republicans, and they're going to be meeting with the president trying to figure this out.